The answer to 'why is my kitchen discolored' is that there are several common causes, including grease buildup, water stains, and discoloration from food spills. Discoloration can be a sign of deeper cleaning issues that require attention.
Grease and grime can accumulate on kitchen surfaces over time, causing a yellowed or dingy appearance. Water stains from splashing or condensation can also lead to discoloration, especially on countertops and backsplashes. Food spills that aren't cleaned up promptly can seep into surfaces and cause permanent staining. Discoloration can also indicate more serious problems like mold or mildew growth.